Question 23 to 26 are based on the following news. At the end of the news item, you will be given 20 seconds to answer the questions. Now listen to the passage. About ______ people were killed in the country’s townships by the week- end.

A．Less than one year.
B．Four years.
C．Five years.
D．Ten years.

A．Acquire information from satellites more efficiently.
B．To realize full coverage of area the satellite passes over.
C．Building more ground observation centers.
D．Compare satellites information with those from ground.